Antenna device
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United States of America Patent
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May 14, 2019
Grant Date -
Nov 5, 2015
app pub date -
Apr 27, 2015
filing date -
Apr 30, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
An antenna device is provided with a substrate; an antenna coil formed into a loop-shaped or spiral-shaped on the substrate; a first metallic layer overlapping with a first part of the antenna coil in a planar view; and a second metallic layer overlapping with a second part of the antenna coil different from the first part. The first and second metallic layers are disposed on both sides of a center of an inner diameter portion of the antenna coil in a planar view, respectively. A slit formed between the first and second metallic layers overlaps with the inner diameter portion of the antenna coil in a planar view. At least one of the first and second metallic layers is formed on the substrate together with the antenna coil.
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